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Weight loss chat

A space to talk openly about weight loss journeys and challenges. Mumsnet hasn't checked the qualifications of anyone posting here. You may wish to speak to a medical professional before starting any diet.

Losing weight with an under active thyroid

34 replies

Trilby12 · 17/03/2025 21:25

Can anyone give me advice on how to loose weight with an under active thyroid please.

OP posts:
GenerousGardener · 20/03/2025 10:56

@Trilby12 yes you are right. Sorry about that.

Trilby12 · 20/03/2025 10:57

Chromaover · 20/03/2025 10:50

Weight loss surgery is very low risk surgery and much lower risk for your health than being morbidly overweight.

I would recommend Why We Eat Too Much the book. It's not just about how many calories you're eating - it's about the type, the fact you've put weight on already etc etc. for me it was a lifetime of going up and down in weight and altering my set point.

I’ll read it, thank you for the suggestion.

OP posts:
Boobyslims · 20/03/2025 11:07

my god OP that’s a shocking situation to deal with, is your doctor giving any indication of why your metabolism is so knocked out at the moment? Unless you’re kidding yourself and I don’t think for a second think you are, there is something very significant going on with your system.

i don’t think jumping to solutions such as jabs is right at all as id have to know the underlying reason for such rapid gain.

ive hashimotos too but now it’s well regulated I can’t say my weight gain is from it, but we are all different. What on earth does your gp say about 10st gain???

Boobyslims · 20/03/2025 11:08

Adding - are you under an endocrinologist or is this all though the GP?

Trilby12 · 20/03/2025 11:19

Boobyslims · 20/03/2025 11:08

Adding - are you under an endocrinologist or is this all though the GP?

I’ve only ever seen my GP about my weight.

My GP has known me for over 20 years and knows this is not me, I’ve never been overweight in my life until the last 3 years and it came on extremely quickly too.

OP posts:
Trilby12 · 20/03/2025 11:22

For the poster that said it’s clinically factual that if I eat less then I use (or along those lines) I wouldn’t gain weight, 3 years ago I would have totally agreed with you but I’m living proof that can’t always be the case because I do.

OP posts:
Boobyslims · 20/03/2025 12:00

@Trilby12can you ask for a endo referral? As you say, your GP knows you, why are they not more alarmed at the rapid changes you’re experiencing.

it must be very hard on your identity etc.

SweetPotatoWedges · 20/03/2025 12:01

I would urge you to research Mounjaro OP. Discuss risks with GP. I’d say it’s worth a try before considering weight loss surgery and is probably less risk all things considered.

It sounds like you’re insulin resistant to gain that amount of weight so quickly. Fatigue is also a symptom. Any PCOS symptoms? Menopausal?

Like you I was terrified after seeing the news of deaths that could be related to weight loss jabs (these may be deaths that could have occurred anyway from obesity related causes, underlying health conditions, people who had contraindications etc) but you have to balance it with the health risks of remaining obese and of course quality of life, and that the majority of people successfully lose weight and are healthier as a result from being on Mounjaro.

Side effects of managing insulin resistance and reducing inflammation are well documented which I am feeling the benefits of already. Swollen ankles have reduced!

I bit the bullet a few weeks ago as I decided the risks of staying morbidly obese and reduced quality of life as feeling like absolute crap all the time outweighed the small risk of serious side effects.

Like you I have an underactive thyroid, menopausal and I am pre diabetic with high cholesterol, and only ever lose a small amount of weight through liquid diets or extreme carb restriction which is unsustainable for me long term. I’m normally ALWAYS hungry all the time too. That has massively changed on Mounjaro and because I’m less hungry I think about nutrition in food and am naturally more geared to eating healthier, nutritious food now.

Gluten can affect the thyroid and also make you feel hungrier so you should try to cut it out and I find it much easier now that I’m not starving all the time and can take time to consider what I’m going to eat.

I’m over a stone down in 3 weeks with no side effects apart from feeling very full after eating. I ensure I eat prunes every day so no constipation and electrolyte drinks so no headaches or nausea. Fried fatty foods can cause indigestion so steer clear.

I’m also a smoker of over 30 years and could never stop but now they taste awful and I’m down from 20 a day to only 3-4 out of habit going into the garden for a puff but I really am not that bothered anymore and imagine I could quit very easily now. Another Mounjaro effect that I’d read about but didn’t believe until I experienced it.

How much water do you drink a day? You should be drinking 3-4 litres a day at your weight and height (spaced over the day). You could be holding onto fluid if you’re not getting enough.

I’d suggest requesting a glucose tolerance test if you haven’t had one recently, full blood work to check any underlying causes of the weight gain, and discussion about trying Mounjaro with GP.

It’s been used to treat diabetes for over 20 years so it’s not a new drug.

SweetPotatoWedges · 20/03/2025 12:13

Just to add, it’s unlikely that you’d get Mounjaro on prescription if you decide to try it, but the cost is worth it IMO to get your life and health back, especially in my case on what I’m saving on fags!

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